Title: Robust coordinated design of excitation and STATCOM-based controller using genetic algorithm

Authors: Sidhartha Panda, Narayana Prasad Patidar, Rishi Singh

Addresses: Department of Electrical and Electronics Engineering, National Institute of Science and Technology, Berhampur, Orissa-761008, India. ' Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal-462051, India. ' Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal-462051, India

Abstract: Power system stability enhancement via robust coordinated design of a power system stabiliser (PSS) and a static synchronous compensator (STATCOM)-based stabiliser is thoroughly investigated in this paper. The coordination among the proposed damping stabilisers and the STATCOM internal AC and DC voltage controllers as well as the current regulator has also been taken into consideration. The coordinated design problem is formulated as an optimisation problem with a time-domain simulation-based objective function and genetic algorithm (GA) is employed to search for optimal controller parameters. The proposed stabilisers are tested on a weakly connected power system with different disturbances and loading conditions. The non-linear simulation results show the effectiveness and robustness of the proposed control schemes over a wide range of loading conditions and disturbances. Further, the proposed design approach is found to be robust and improves stability effectively even under small disturbance and unbalanced fault conditions.

Keywords: power system stability; PSS; static synchronous compensator; STATCOM; genetic algorithms; GAs; coordinated design; robust design; nonlinear simulation.

DOI: 10.1504/IJICA.2008.026967

International Journal of Innovative Computing and Applications, 2008 Vol.1 No.4, pp.244 - 251

Available online: 11 Jul 2009

Full-text access for editors Access for subscribers Purchase this article Comment on this article